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You have been recently hired as a database administrator. Your senior manager asks you to study the production database server and submit a report on the settings done by the previous DBA.  While observing the server settings， you find that the following parameter has been set in the parameter file of the database：  REMOTE_OS_AUTHENT = TRUE  What could have been the reason to set this parameter as TRUE？（）
A:to enable operating system authentication for a remote client
B:to restrict the scope of administration to identical operating systems
C:to allow the start up and shut down of the database from a remote client
D:to enable the administration of the operating system from a remote client
E:to disable the administration of the operating system from a remote client

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出自：Oracle认证

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